How to adjust the Max faces of a particular child in "_toplevel", and what part of the code is used to modify the object detail level through Max faces?

[Chunxiao7]

How to adjust the Max faces of a particular child in "_toplevel", and what part of the code is used to modify the object detail level through Max faces?

[linev]

Hi,

maxfaces limiting total number of faces (triangles) created for provided geometry.
Very often large geometry contains millions of individual volumes.
Trying to render all of them will lead to generation of many millions of faces - which does not work with WebGL in web browsers. Therefore selection algorithm is applied to render only most significant volumes - until given number of faces are produced.

maxfaces cannot be applied for specific volume. Each volume either selected for rendering with all its faces or refused completely.

[Chunxiao7]

I actually want to raise Maxfaces in the highlighted areas of the diagram without affecting the other areas.

[linev]

It is not possible to change number of faces for some specific branch of geometry model.
Also it is not possible to change it for highlighted volumes.

But you can try drastically increase maxfaces parameter for geometry like you show here.
JSROOT uses now InstancedMesh which improves a lot rendering of geometries with large number of similar volumes.

[Chunxiao7]

The problem now is that when I increase the overall geometric Maxfaces until the expected Maxfaces are highlighted as expected, it causes too many Maxfaces in other areas, which in turn causes the browser to consume too much memory.

[linev]

Can you switch off visibility of volumes which you do not like to see in rendering?

[Chunxiao7]

I'm sorry if I don't understand, but why switch off visibility? The problem l understand now is to only adjust the Maxfaces of volumes, not the visibility.

[linev]

In the geometry model you can switch off visibility of some volumes